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45
Table 11 —
Direct-Expansion Circuiting Data (cont)
Medium Face Area Coils (cont)
LEGEND
TXV —
Thermostatic Expansion Valve (Field Supplied)
*When 2 nozzle sizes are listed, the smaller nozzle should be located on the upper distributor.
NOTE: Factory-supplied distributors have factory-selected nozzle sizes as shown. If necessary,
replace factory-supplied nozzles with field-supplied and field-installed nozzles. Consult
AHU
Builder
®
software selection program for correct nozzle selection.
39M UNIT SIZE
42T
50W
51T
58T
CIRCUITING TYPE
Half
Full
Double
Full
Double
Half
Full
Double
Half
Full
Double
Airflow (cfm) at 500 fpm
17,448
19,861
21,094
23,906
Total Face Area (sq ft)
34.9
39.7
42.2
47.8
Tubes in Face
30
30
30
30
30
30
44
44
30
30
30
30
30
30
34
34
34
34
34
34
Tube Length (in.)
67
67
67
67
67
67
104
104
81
81
81
81
81
81
81
81
81
81
81
81
No. of Circuits - Total
15
15
30
30
60
60
44
88
15
15
30
30
60
60
17
17
34
34
68
68
4-Row Coil
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Upper
Lower
Face Split Coils
No. of TXVs
2
2
2
2
—
—
4
—
2
2
2
2
—
—
2
2
2
2
—
—
Suction Connections (in. OD)
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
—
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
1-3/8
1-5/8
1-5/8
—
—
Distributor Connections (in. OD)
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
—
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
1-1/8
1-3/8
1-3/8
—
—
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-12
—
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-8
E-8
C-17
C-17
—
—
Intertwined Row Split Coils
No. of TXVs
2
2
2
2
—
—
4
—
2
2
2
2
—
—
2
2
2
2
—
—
Suction Connections (in. OD)
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
—
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
1-3/8
1-5/8
1-5/8
—
—
Distributor Connections (in. OD)
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
—
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
1-1/8
1-3/8
1-3/8
—
—
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-12
—
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-8
E-8
C-17
C-17
—
—
Single Circuit Coils
No. of TXVs
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Suction Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Nozzle Size
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6-Row Coil
Face Split Coils
No. of TXVs
2
2
2
2
—
—
4
—
2
2
2
2
—
—
2
2
2
2
—
—
Suction Connections (in. OD)
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
—
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
1-3/8
1-5/8
1-5/8
—
—
Distributor Connections (in. OD)
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
—
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
1-1/8
1-3/8
1-3/8
—
—
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-12
—
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-8
E-8
C-17
C-17
—
—
Intertwined Row Split Coils
No. of TXVs
2
2
2
2
—
—
4
—
2
2
2
2
—
—
2
2
2
2
—
—
Suction Connections (in. OD)
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
—
1-1/8
1-1/8
1-5/8
1-5/8
—
—
1-3/8
1-3/8
1-5/8
1-5/8
—
—
Distributor Connections (in. OD)
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
—
7/8
7/8
1-3/8
1-3/8
—
—
1-1/8
1-1/8
1-3/8
1-3/8
—
—
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-12
—
G-8/G-6 G-8/G-6 C-15
C-15
—
—
E-8
E-8
C-17
C-17
—
—
Single Circuit Coils
No. of TXVs
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Suction Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Nozzle Size
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8-Row Coil
Face Split Coils
No. of TXVs
2
2
2
2
4
4
4
8
2
2
2
2
4
4
2
2
2
2
4
4
Suction Connections (in. OD)
1-1/8
1-1/8
1-5/8
1-5/8
1-5/8
1-5/8
1-3/8
1-3/8
1-1/8
1-1/8
1-5/8
1-5/8
1-5/8
1-5/8
1-3/8
1-3/8
1-5/8
1-5/8
1-5/8
1-5/8
Distributor Connections (in. OD)
7/8
7/8
1-3/8
1-3/8
1-3/8
1-3/8
1-1/8
1-1/8
7/8
7/8
1-3/8
1-3/8
1-3/8
1-3/8
1-1/8
1-1/8
1-3/8
1-3/8
1-3/8
1-3/8
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15
C-15
C-15
C-15
E-12
E-12 G-8/G-6 G-8/G-6 C-15
C-15
C-15
C-15
E-8
E-8
C-17
C-17
C-17
C-17
Intertwined Row Split Coils
No. of TXVs
2
2
2
2
4
4
4
8
2
2
2
2
4
4
2
2
2
2
4
4
Suction Connections (in. OD)
1-1/8
1-1/8
1-5/8
1-5/8
1-5/8
1-5/8
1-3/8
1-3/8
1-1/8
1-1/8
1-5/8
1-5/8
1-5/8
1-5/8
1-3/8
1-3/8
1-5/8
1-5/8
1-5/8
1-5/8
Distributor Connections (in. OD)
7/8
7/8
1-3/8
1-3/8
1-3/8
1-3/8
1-1/8
1-1/8
7/8
7/8
1-3/8
1-3/8
1-3/8
1-3/8
1-1/8
1-1/8
1-3/8
1-3/8
1-3/8
1-3/8
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15
C-15
C-15
C-15
E-12
E-12 G-8/G-6 G-8/G-6 C-15
C-15
C-15
C-15
E-8
E-8
C-17
C-17
C-17
C-17
Single Circuit Coils
No. of TXVs
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Suction Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Nozzle Size
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—